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<http://schema.org/description>
"Flowkey is an app that gives step-by-step instructions to students as they play along to new songs on the piano. Through sound recognition, the app can tell if the student plays the keys correctly or not. Aside from this description found in a short video on their homepage, Flowkey has a basic, unclear website that initially makes it hard for students to know exactly how the interface works and how much it costs."
<https://www.topconsumerreviews.com/best-piano-lessons/>